why hub object is undefined below is the code, I have owin, hub all the classes in my project, howevery am not able to call hub methods?
<!--Reference the SignalR library. -->
<script src="../scripts/jquery.signalR-2.2.1.min.js"></script>
<!--Reference the autogenerated SignalR hub script. -->
<script src="/signalr/signalr/hubs"></script>
<script type="text/javascript">
$(function () {
//why hub is not created matrixHub = undefined
var matrixHub = $.connection.MyHub;
// TODO, callbacks and hub invoker
$.connection.hub.start();
debugger;
});
</script>
<form id="form1" runat="server">
<div>
</div>
</form>
</body>
Your capitalization is wrong, it should be
var matrixHub = $.connection.myHub;
IF your hub class is named MyHub : Hub
The reason for this has to do with how the javascript for the hub is generated, all methods and the hub itself are all created with camelCase names on a javascript client.
Related
I have a dialog flow that will require a user to upload a file/files. I would like to prompt the user and have them click on a button to open a file browse window to select the file they want to upload. I do not want to use the file chooser in the WebChat window text entry box (Users find this confusing). Is this possible? I saw in the documentation for v3 that there is a AttachmentPrompt dialog. However in the documentation for v4 I only see it mentioned in a one liner here... https://learn.microsoft.com/en-us/azure/bot-service/bot-builder-concept-dialog?view=azure-bot-service-4.0 however other than that which sounds promising there appears to be no documentation on this functionality.
Thanks for any help you can provide!
PromptAttachment does not define client side rendering, or client side file upload code. In order to have the WebChat control respond to a custom button, you will need to provide an Attachment Middleware for the Web Chat control, and have the bot send a custom attachment type.
Custom Attachment:
private class FileUpload : Attachment
{
public FileUpload()
: base("application/uploadAttachment") { }
}
Replying with FileUpload attachment:
var reply = activity.CreateReply("Upload a File");
reply.Attachments.Add(new FileUpload());
await connector.Conversations.SendToConversationAsync(reply);
Page hosting Web Chat:
<!DOCTYPE html>
<html>
<body>
<div id="webchat" />
<script src="https://unpkg.com/babel-standalone#6/babel.min.js"></script>
<script src="https://unpkg.com/react#16.5.0/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom#16.5.0/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/react-redux#5.0.7/dist/react-redux.min.js"></script>
<script src="https://cdn.botframework.com/botframework-webchat/latest/webchat.js"></script>
<script>
function uploadFile() {
document.querySelector('[title="Upload file"]').click();
}
</script>
<script type="text/babel">
var chatbot = new WebChat.createDirectLine({
token: 'YourToken',
webSocket: true,
});
const attachmentMiddleware = () => next => card => {
switch (card.attachment.contentType) {
case 'application/uploadAttachment':
return (<button type="button" onClick={uploadFile}>Upload file</button>);
default:
return next(card);
}
};
WebChat.renderWebChat({
directLine: chatbot,
botAvatarInitials: 'Bot',
attachmentMiddleware,
}, document.getElementById('webchat'));
</script>
</body>
</html>
I don't know how to solve the following: I'd like to let my Model generate real javascript dynamically based on some model logic.
This final piece of javascript code then should be added inside the $(document).ready { } part of my html page.
The thing is: If I use inline="javascript", the code gets quoted as my getter is a String (that is how it is mentioned in the Thymeleaf doc but it's not what I need ;-)
If I use inline="text" in is not quoted but all quotes are escaped instead ;-) - also nice but unusable 8)
If I try inline="none" nothing happens.
Here are the examples
My model getter created the following Javascript code.
PageHelper class
public String documentReady() {
// do some database operations to get the numbers 8,5,3,2
return "PhotoGallery.load(8,5,3,2).loadTheme(name='basic')";
}
So if I now try inline="javascript"
<script th:inline="javascript">
/*<![CDATA[*/
jQuery().ready(function(){
/*[[${pageHelper.documentReady}]]*/
});
/*]]>*/
</script>
it will be rendered to
<script>
/*<![CDATA[*/
jQuery().ready(function(){
'PhotoGallery.load(8,5,3,2).loadTheme(name=\'basic\')'
});
/*]]>*/
</script>
Which doesn't help as it is a String literal, nothing more (this is how Thymeleaf deals with it).
So if I try inline="text" instead
<script>
/*<![CDATA[*/
jQuery().ready(function(){
PhotoGallery.load(8,5,3,2).loadTheme(name='basic')
});
/*]]>*/
</script>
Which escapes the quotes.
inline="none" I do not really understand, as it does nothing
<script>
/*<![CDATA[*/
jQuery().ready(function(){
[[${pageHelper.documentReady}]]
});
/*]]>*/
</script>
To be honest I have no idea how to solve this issue and hopefully anybody out there knows how to deal with this.
Many thanks in advance
Cheers
John
I would change the approach.
Thymeleaf easily allows you to add model variables in your templates to be used in Javascript. In my implementations, I usually put those variables somewhere before the closing header tag; to ensure they're on the page once the JS loads.
I let the template decide what exactly to load, of course. If you're displaying a gallery, then render it as you would and use data attributes to define the gallery that relates to some JS code. Then write yourself a nice jQuery plugin to handle your gallery.
A relatively basic example:
Default Layout Decorator: layout/default.html
<!doctype html>
<html xmlns:layout="http://www.thymeleaf.org" xmlns:th="http://www.thymeleaf.org">
<head>
<title>My Example App</title>
<object th:remove="tag" th:include="fragments/scripts :: header" />
</head>
<body>
<div layout:fragment="content"></div>
<div th:remove="tag" th:replace="fragments/scripts :: footer"></div>
<div th:remove="tag" layout:fragment="footer-scripts"></div>
</body>
</html>
The thing to notice here is the inclusion of the generic footer scripts and then a layout:fragment div defined. This layout div is what we're going to use to include our jQuery plugin needed for the gallery.
File with general scripts: fragments/scripts.html
<div th:fragment="header" xmlns:th="http://www.thymeleaf.org">
<script type="text/javascript" th:inline="javascript">
/*<![CDATA[*/
var MY_APP = {
contextPath: /*[[#{/}]]*/,
defaultTheme: /*[[${theme == null} ? null : ${theme}]]*/,
gallery: {
theme: /*[[${gallery == null} ? null : ${gallery.theme}]]*/,
images: /*[[${gallery == null} ? null : ${gallery.images}]]*/,
names: /*[[${gallery == null} ? null : ${gallery.names}]]*/
}
};
/*]]>*/
</script>
</div>
<div th:fragment="footer" xmlns:th="http://www.thymeleaf.org">
<script type="text/javascript" src="/js/jquery.js"></script>
<script type="text/javascript" src="/js/my_app.js"></script>
</div>
In the scripts file, there are 2 fragments, which are included from the decorator. In the header fragment, a helpful context path is included for the JS layer, as well as a defaultTheme just for the hell of it. A gallery object is then defined and assigned from our model. The footer fragment loads the jQuery library and a main site JS file, again for purposes of this example.
A page with a lazy-loaded gallery: products.html
<html layout:decorator="layout/default" xmlns:layout="http://www.thymeleaf.org/" xmlns:th="http://www.thymeleaf.org">
<head>
<title>Products Landing Page</title>
</head>
<body>
<div layout:fragment="content">
<h1>Products</h1>
<div data-gallery="lazyload"></div>
</div>
<div th:remove="tag" layout:fragment="footer-scripts">
<script type="text/javascript" src="/js/my_gallery.js"></script>
</div>
</body>
</html>
Our products page doesn't have much on it. Using the default decorator, this page overrides the page title in the head. Our content fragment includes a title in an h1 tag and an empty div with a data-gallery attribute. This attribute is what we'll use in our jQuery plugin to initialize the gallery.
The value is set to lazyload, so our plugin knows that we need to find the image IDs in some variable set somewhere. This could have easily been empty if the only thing our plugin supports is a lazyloaded gallery.
So the layout loads some default scripts and with cleverly placed layout:fragments, you allow certain sections of the site to load libraries independent of the rest.
Here's a basic Spring controller example, to work with our app: MyController.java
#Controller
public class MyController {
#RequestMapping("/products")
public String products(Model model) {
class Gallery {
public String theme;
public int[] images;
public String[] names;
public Gallery() {
this.theme = "basic";
this.images = new int[] {8,5,3,2};
this.names = new String[] {"Hey", "\"there's\"", "foo", "bar"};
}
}
model.addAttribute("gallery", new Gallery());
return "products";
}
}
The Gallery class was tossed inline in the products method, to simplify our example here. This could easily be a service or repository of some type that returns an array of identifiers, or whatever you need.
The jQuery plugin that we created, could look something like so: my_gallery.js
(function($) {
var MyGallery = function(element) {
this.$el = $(element);
this.type = this.$el.data('gallery');
if (this.type == 'lazyload') {
this.initLazyLoadedGallery();
}
};
MyGallery.prototype.initLazyLoadedGallery = function() {
// do some gallery loading magic here
// check the variables we loaded in our header
if (MY_APP.gallery.images.length) {
// we have images... sweet! let's fetch them and then do something cool.
PhotoGallery.load(MY_APP.gallery.images).loadTheme({
name: MY_APP.gallery.theme
});
// or if load() requires separate params
var imgs = MY_APP.gallery.images;
PhotoGallery.load(imgs[0],imgs[1],imgs[2],imgs[3]).loadTheme({
name: MY_APP.gallery.theme
});
}
};
// the plugin definition
$.fn.myGallery = function() {
return this.each(function() {
if (!$.data(this, 'myGallery')) {
$.data(this, 'myGallery', new MyGallery(this));
}
});
};
// initialize our gallery on all elements that have that data-gallery attribute
$('[data-gallery]').myGallery();
}(jQuery));
The final rendering of the products page would look like so:
<!doctype html>
<html>
<head>
<title>Products Landing Page</title>
<script type="text/javascript">
/*<![CDATA[*/
var MY_APP = {
contextPath: '/',
defaultTheme: null,
gallery: {
theme: 'basic',
images: [8,5,3,2],
names: ['Hey','\"there\'s\"','foo','bar']
}
};
/*]]>*/
</script>
</head>
<body>
<div>
<h1>Products</h1>
<div data-gallery="lazyload"></div>
</div>
<script type="text/javascript" src="/js/jquery.js"></script>
<script type="text/javascript" src="/js/my_app.js"></script>
<script type="text/javascript" src="/js/my_gallery.js"></script>
</body>
</html>
As you can see, Thymeleaf does a pretty good job of translating your model to valid JS and actually adds the quotes where needed and escapes them as well. Once the page finishes rendering, with the jQuery plugin at the end of the file, everything needed to initialize the gallery should be loaded and ready to go.
This is not a perfect example, but I think it's a pretty straight-forward design pattern for a web app.
instead of ${pageHelper.documentReady} use ${pageHelper.documentReady}
I want to make a specific component for showing loading icon when the browser waits to load data from json. Is there any possible way to do it by using a service ??
html :
<html ng-app="app">
<head>
<title> ERP </title>
</head>
<body >
<div ng-controller="data"><span class="loading" ng-show="loader"><img src="ajax-loader.gif"></span>
<table>
<tr><td>{{data1}}</td><td>{{data1}}</td><td>{{data1}}</td></tr>
</table>
</div>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.15/angular.min.js"></script>
<script type="text/javascript" src="ctrl.js"></script>
</body>
</html>
js :
var app = angular.module('app',[]);
app.controller('data', ['$scope','$http',function($scope,$http){
$scope.loader = null ;
if($scope.loader == null )
{
$scope.loader = true ;
}
$http.get('events.json').
success(function(data) {
$scope.loader = false ;
console.log(data);
$scope.data1 = data ;
console.log($scope.data1);
}).
error(function(data, status, headers, config) {
});
}]);
You can wrap the original $http to provide a customizedHttp service. in this service, provide the same interface with $http. when sending GET request to the server, the customizedHttp broadcast an event to show the loading flag. and after receiving response, broadcast another event to hide the loading flag.
to control the flag, you'd better to write a directive.
I'm just starting to use Parse Core (as Google'e ScriptDB is being decommissioned soon) and am having some trouble.
So I'm able to get Parse Core db to read/write using just a standard HTML page as shown below:
<!doctype html>
<head>
<meta charset="utf-8">
<title>My Parse App</title>
<meta name="description" content="My Parse App">
<meta name="viewport" content="width=device-width">
<link rel="stylesheet" href="css/reset.css">
<link rel="stylesheet" href="css/styles.css">
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript" src="http://www.parsecdn.com/js/parse-1.2.18.min.js"></script>
</head>
<body>
<div id="main">
<h1>You're ready to use Parse!</h1>
<p>Read the documentation and start building your JavaScript app:</p>
<ul>
<li>Parse JavaScript Guide</li>
<li>Parse JavaScript API Documentation</li>
</ul>
<div style="display:none" class="error">
Looks like there was a problem saving the test object. Make sure you've set your application ID and javascript key correctly in the call to <code>Parse.initialize</code> in this file.
</div>
<div style="display:none" class="success">
<p>We've also just created your first object using the following code:</p>
<code>
var TestObject = Parse.Object.extend("TestObject");<br/>
var testObject = new TestObject();<br/>
testObject.save({foo: "bar"});
</code>
</div>
</div>
<script type="text/javascript">
Parse.initialize("PyMFUxyBxR8IDgndjZ378CeEXH2c6WLK1wK2JHYX", "IgiMfiuy3LFjzH0ehmyf5Rkti8AmVtwcGqc6nttN");
var TestObject = Parse.Object.extend("TestObject");
var testObject = new TestObject();
testObject.save({foo: "bar"}, {
success: function(object) {
$(".success").show();
},
error: function(model, error) {
$(".error").show();
}
});
</script>
</body>
</html>
However, when I try to serve that up using the HtmlService shown below, I get no response from Parse. Parse Core.html basically has all of the code I have above ( only thing I changed was to remove the css calls).
function doGet() {
var htmlPage = HtmlService.createTemplateFromFile('Parse Core.html')
.evaluate()
.setSandboxMode(HtmlService.SandboxMode.NATIVE)
.setTitle('Parse Core Test');
return htmlPage;
}
Link to ParseDb Library for Apps Script
Here is the key to add the library: MxhsVzdWH6ZQMWWeAA9tObPxhMjh3Sh48
Install that library and it allows you to use most of the same methods that were used by ScriptDb. As far as saving and querying go they almost identical. Make sure to read the Library's notes, how to add the applicationId and restApiKey. It is a little different that you can silo data by classes which must be defined in the call to Parse.
Bruce here is leading the way on database connection for Apps Script, he has plenty of documentation on using Parse.com, and also his own DbConncection Drive that would allow you to use a number of back-end systems.
Excel Liberation - Bruce's Site.
i am trying to create a chat application and i've read that signalr is a good thing to use. i looked for examples of it and so far, i've done this:
<script src="Scripts/jquery-1.6.2.min.js" type="text/javascript"></script>
<script src="Scripts/jquery.signalR.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
var connection = $.connection('echo');
connection.received(function (data) {
$('#messages').append('<li>' + data + '</li>');
});
connection.start();
$("#broadcast").click(function () {
connection.send($('#msg').val());
});
});
</script>
<input id="msg">
<input id="broadcast" type="button">
<ul id="messages"></ul>
this only creates a single connection. i want to create multiple chat rooms, how can i make another connection and store those connections, lets say, in a database so i can have a record of those connections.
I don't think you need multiple connctions, but for a great example you can check out jabbr.net on gitHub an opensource chatapplication build with signalR and created by the same person that created SignalR.
The great example of web-based chat using signalr and ASP.NET MVC is http://jabbr.net. It has chatrooms, commands, smiles and other useful features. Just explore its source code which is available here: https://github.com/davidfowl/JabbR